Railway-car bolster.



No. 822,979. PATENTBD JUNE l2, 1906.

S. OTIS.

RAILWAY GAR BOLSTER.`

APPLIoATI-on FILED IBB.'26,1906.

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3B ww UNITED STATES PATENT OFFICE,

SPENCER OTIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL PATENT HOLDING COMPANY, OF RAPID CITY, SOUTH DAKOTA, A CORPORA- TION OF SOUTH DAKOTA.

RAILWAY-CAR BOLSTER.

Specification of Letters Patent.

`Patented. June 12, 1906.'

To all whom it may concern:

Be it known that I, SPENCER Oris, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Railway- Car Bolsters, of which the following is a specification.

My invention relates to bolsters for railn way-cars, and has for its object to produce a simple, strong, and eflicient bolster.

My invention consists in the details and combinations hereinafter described and claimed.

In the accompanying drawings, Figure l is a plan view of my improved bolster Fig. 2, a longitudinal sectionon the line 2 of Fig. 3; and Fig. 3 a transverse section on the line 3 of Fig. 2.

I have shown my invention as applied to a bolster of the type in which an upper channel-bar member and a lower I-beam member are used.

In the drawings, a represents the lower I-beam having upper flanges b and lower ianges b, the upper flanges l) being secured by rivets c2 to the web of the upper channel-bar member c. The upper channelbar member has the usual flanges c. The upper flanges of the I-beam member are slotted near their ends., and the web of the channel-bar member is provided with corresponding slots which register therewith when the members are secured together. The I-beam member has its ends a inclined inwardly, as shown. Passing around the inclined ends of the lower member is a metallic brace-strap d, having the general shape of the letter UQ The ends of this brace-strap are passed through the slots in the flanges of the lower member and the web of the upper member and are rmly secured thereto by means of rivets d2, as clearly shown in Fig. 3. This brace-strap forms a very eflicient means for holding the parts together when they are subjected to the strains incident to service. Passing around the ends of the upper channel-bar member is a [-shaped brace e, having its ends e secured to the depending fianges of the upper member. As is well known, the flanges of the upper member in bolsters of this type are liable to buckle or spread when weight is a plied to them. By the use of the race W 'ch I have just described this tendency is entirely overcome. YThis brace also forms an inclosing box in conjunction with the iianges of the channel-bar member for the spring bearing-block lc.

It will be observed that the web of the channel-bar member and the upper flanges of the I-beam member form upper and lower plates for the upper member of the bolster. The web or upper plate is provided with a central opening f 3, while the flanges of the I' beam forming the lower plate form a bottom portion for this opening. Surrounding this central opening is the center bearing f, having the bearing portion f and a flange f2, which surrounds and partly overhangs the central opening. Thus a space is formed between the flange f2 and the lower plate. A headedking-bolt g rests in this opening, the head g of the bolt being loosely held between the iiange and the lower plate. This forms a very simple and efficient means for retaining the king-bolt in place, at the same time allowing the necessary play thereof.

It will be seen that I have simple and efficient bolster.

I do not intend to limit myself to the exact details of construction which I have described, but intend to cover such variations as may fall within the spirit and scope of my invention.

I claim-` 1. A bolster for railway-cars, comprising an upper channel-bar member, a lower member secured thereto, and a |:shaped brace member secured to the end of the channelbar member.

2. A bolster for railway-cars, comprising an upper channel-bar member, a vertical I- beam member secured thereto, and a shaped brace member secured to the end of the channel-bar member, said brace member also forming an inclosing boX for the spring bearing-block.

3. A railway-car bolster, comprising a slotted upper horizontal member and a correspondingly-slotted lower vertical member secured thereto, said lower member having inwardly-inclined ends, and a braceestrap passing around the inclined ends and through the slots on the upper and lower members.

4. A bolster for railway-cars, comprising an upper channel-bar member, a lower I-beam member secured to the web of the upper chanprovided a very f IOO nel-bar member, sai'd lower member having inwardly-inclined ends, said upper member and lower member being provided with slots f in the web and flanges thereof respectively, and a metallic brace-strap embracing the inclined end portion of the lower member and having its ends passed through the slots in the bolster' members and secured thereto.

5. A railway-oar bolster having a horizon- 1o tal upper member, comprising upper and lower plates, the upper plate having a eentral opening, a center bearing having a flange surrounding and overlianging the opening, and a headed king-bolt having its head loosely held in the openingbetween the lower plate I 5 and the ange on t e center bearing.

SPENCER OTIS. Witnesses 1 NORMAN A. STREET, CHARLES F. Fr'rrs.\ 

